Old-Fashioned Peanut Butter Brownies

🕒 Prep: 15 min
🔥 Cook: 35 min
🍽 Serves: 24
★★★★★
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Old-Fashioned Peanut Butter Brownies are the perfect blend of rich chocolate and creamy peanut butter, creating a truly indulgent treat. With their soft, fudgy texture and irresistible flavor, these brownies are sure to become a family favorite.

Old-Fashioned Peanut Butter Brownies

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Ingredients for Old-Fashioned Peanut Butter Brownies

Ingredients for Old-Fashioned Peanut Butter Brownies

Butter is the base of our brownies, providing richness and helping achieve that melt-in-your-mouth texture. Granulated sugar and brown sugar complement each other, adding sweetness and a hint of molasses flavor from the brown sugar. Creamy peanut butter not only adds that classic peanut flavor but also contributes to the moistness of the brownies. Eggs bind everything together, while vanilla extract enhances all the flavors. All-purpose flour gives structure, and cocoa powder provides the chocolatey goodness. Baking powder helps the brownies rise just the right amount, and salt balances the sweetness. Finally, semi-sweet chocolate chips add bursts of gooey chocolate throughout.

Why This Old-Fashioned Peanut Butter Brownies Works

During mixing, the butter, sugars, and peanut butter blend into a thick, creamy base. The fat from the butter and peanut butter coats the sugar and flour later on, so the brownies stay soft instead of drying out. As the eggs go in one by one, the batter loosens up and becomes smooth and shiny, which lets everything spread evenly in the pan.

Once the dry ingredients are added, the flour and cocoa soak up some of that moisture and fat and form a soft structure. Baking powder gives a gentle lift, so the brownies are dense and fudgy instead of cakey. In the oven, the edges set first while the center stays a little softer. By the time a toothpick comes out with a few crumbs, the middle is just cooked through but still moist.

As the brownies cool in the pan, the melted chocolate chips firm back up and the peanut butter base settles. The texture changes from hot and gooey to chewy and sliceable, so the squares hold together but still feel rich and soft when bitten into.

Old-Fashioned Peanut Butter Brownies Tips & Tricks

  • Use room temperature ingredients to ensure better mixing and a smoother batter.
  • If you’re short on time, you can melt the butter instead of creaming it, but this will slightly alter the texture.
  • For an extra peanut butter kick, swirl in a few tablespoons of peanut butter on top of the batter before baking.

Mistakes To Avoid

Overbaking these brownies easily turns them dry and crumbly. Once they pass the “few moist crumbs” stage and the toothpick comes out totally clean, the edges harden, the center loses its fudgy feel, and the peanut butter flavor seems flat because the sugar has cooked too far.

Creaming the butter and sugars too little or skipping that step leads to a heavy, dense pan of brownies. Without that early mixing, the sugar doesn’t dissolve well into the butter, so the batter stays grainy and the brownies bake up flat instead of slightly puffed and tender.

Adding the eggs all at once instead of one at a time often leaves streaks of egg that never fully mix in. Those streaks can cook into rubbery bits in the baked brownies, and the texture turns uneven, with some parts cakey and some parts oddly firm.

Overmixing after the flour and cocoa go in makes the brownies tough. The more the batter is stirred at that point, the more the gluten in the flour tightens, so the finished bars lose their soft chew and feel bouncy and dry instead.

Equipment Used:

Mixing bowls, Electric mixer, 9x13 inch baking dish, Whisk, Spatula

Ingredients

  1. 1 cup butter
  2. 2 cups granulated sugar
  3. 1 cup brown sugar
  4. 1 cup creamy peanut butter
  5. 4 large eggs
  6. 2 teaspoons vanilla extract
  7. 2 cups all-purpose flour
  8. 1/2 cup cocoa powder
  9. 1 teaspoon baking powder
  10. 1/2 teaspoon salt
  11. 1 cup semi-sweet chocolate chips

Step-by-step Instructions

  1. 1. Preheat the oven to 350°F (175°C) and grease a 9x13 inch baking dish.
  2. 2. In a large bowl, cream together the butter, granulated sugar, and brown sugar until smooth.
  3. 3. Mix in the peanut butter until well combined.
  4. 4. Beat in the eggs, one at a time, then stir in the vanilla extract.
  5. 5. In another bowl, whisk together the flour, cocoa powder, baking powder, and salt.
  6. 6. Gradually add the dry ingredients to the peanut butter mixture, mixing until just combined.
  7. 7. Fold in the chocolate chips.
  8. 8. Spread the batter evenly into the prepared baking dish.
  9. 9. Bake for 30-35 minutes or until a toothpick inserted into the center comes out with a few crumbs.
  10. 10. Allow to cool in the pan before cutting into squares and serving.

Frequently Asked Questions

Can I use crunchy peanut butter instead of creamy?
Yes, but it will change the texture slightly, adding a bit of crunch to your brownies.
How should I store these brownies?
Store them in an airtight container at room temperature for up to 3 days, or freeze for longer storage.
Can I make these brownies gluten-free?
Yes, you can substitute the all-purpose flour with a gluten-free flour blend. Just make sure it includes a binder like xanthan gum.

Serving Ideas for Old-Fashioned Peanut Butter Brownies

For a decadent touch, serve these brownies warm with a scoop of vanilla ice cream. They also pair beautifully with a cold glass of milk or a hot cup of tea. For a party, try cutting them into bite-sized squares and serving with toothpicks for easy snacking.

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This recipe is for informational purposes only. Always follow proper food safety practices, cook foods to safe internal temperatures, and store leftovers appropriately. Results may vary.